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Experimental knowledge popularization: COD pretreatment-how to eliminate the influence of chloride ions
COD (chemical oxygen demand) water sample pretreatment is an important step to ensure the accuracy of COD measurement. The main purpose is to remove interfering substances in the water sample and adjust the state of the water sample to make it suitable for subsequent COD measurement. In the deter...Read more -
LH-P300 portable multi-parameter water quality meter, the “fighter” in cost-effectiveness!
Environmental protection is the consensus of earthlings, and water quality safety has become one of the focuses of common concern from all walks of life. Whether it is domestic sewage, industrial wastewater, or natural water body monitoring, it is inseparable from accurate and efficient water qu...Read more -
Lianhua Company’s COD consumables classification and special advantages for water quality testing
COD solid consumables Classic LH-D/E series dish colorimetry Features 1. High stability, high accuracy, wide measurement range 2. Powder sealed packaging, easy to transport, easy to store, long shelf life 3. Telephone anti-counterfeiting inquiry of original special reagents to ensure measurement...Read more -
![Application case of five-day biochemical culture method BOD instrument LH-BOD606 in the [wastewater treatment] industry](https://cdn.globalso.com/lhwateranalysis/BOD606-1.jpg)
Application case of five-day biochemical culture method BOD instrument LH-BOD606 in the [wastewater treatment] industry
Scenario: [wastewater treatment] Instrument: LH-BOD606 Background introduction The case customer is a sewage treatment plant, which adopts biochemical treatment technology to treat domestic sewage and some industrial wastewater from various areas of the city. In order to ensure that the effluent ...Read more -
Lianhua Ammonia Nitrogen Experiment Frequently Asked Questions and Answers
Q1: When testing ammonia nitrogen, is it measured in terms of nitrogen element or ammonium ions? Answer: Ammonia nitrogen refers to the sum of nitrogen in the form of free ammonia (NH₃) and ammonium ions (NH₄⁺) in water, so the ammonia nitrogen we usually test is measured in terms of nitrogen. Q2...Read more -
Lianhua COD Experiment Knowledge Summary
Q1: How to quickly understand the approximate concentration range of COD samples? Answer: Take 2.5mL of COD water sample, add D/E consumables and shake it continuously. You can judge the approximate concentration of COD in the water sample by color. The closer the color is to blue-green, the grea...Read more -
Lianhua Technology’s Highlights in 2024: Innovation in Water Quality Testing, Honor and Public Welfare
In the era of rapid development of environmental testing, Lianhua Technology has always been at the forefront, and in 2024, it has achieved remarkable results. This year, Lianhua Technology has continued to deepen its efforts in the field of water quality testing with its outstanding innovation c...Read more -
New and upgraded | LH-BOD306 biochemical oxygen demand meter, micro host, intelligent detection!
Biochemical Oxygen Demand (BOD5) Meter LH-BOD306 1, Instrument Introduction This instrument is a brand new instrument for measuring BOD in water based on manometric method. It can independently detect bottle caps and simulate the reaction process of the standard HJ505-2009. It is manufactured ac...Read more -
Application cases of LH-C600 in the emergency detection industry
Scenario: [Emergency Detection] Instrument: LH-C600 Background Introduction The case customer is a city environmental monitoring brigade, which needs to monitor COD, ammonia nitrogen, total phosphorus, total nitrogen, hexavalent chromium, zinc, nickel, cadmium and other indicators on a daily bas...Read more -
The role of nitrogen and phosphorus in activated sludge and the calculation of addition!
For industrial wastewater with a single component and a lack of nitrogen and phosphorus nutrients, the timely and appropriate addition of nitrogen and phosphorus nutrients is particularly important. Nitrogen, phosphorus and other nutrients are important factors in maintaining the growth and repro...Read more -
Treatment and detection of oil and fat industrial wastewater
Sources and characteristics of oil and fat wastewater Oil and fat wastewater mainly comes from the continuous alkali refining, hydration, acidification, neutralization, degumming, deodorization, decolorization, washing, filtration and other processes in the leaching, physical and chemical refinin...Read more -
Related knowledge and wastewater testing of textile printing and dyeing wastewater
Textile wastewater is mainly wastewater containing natural impurities, fats, starch and other organic substances generated during the process of raw material cooking, rinsing, bleaching, sizing, etc. Printing and dyeing wastewater is generated in multiple processes such as washing, dyeing, print...Read more
